• 산업경영시스템학회지
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• 제36권1호
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• pp.36-43
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• 2013

Many retailer store managers are experiencing the situation where some customers balk at purchasing products if the stock is low. In this paper, we extend the single period newsvendor model in an environment of customer balking behavior occurring at double threshold inventory levels assuming the chance of sales during balking is a discrete function of inventory level. Our analysis is based on the assumption that only the mean and the variance of demand are known, without assuming any specific distributional form. We derive the explicit general expression of optimal order quantity with unknown distribution of demand with double threshold inventory levels of customer balking. Then, we illustrate the concepts developed here through simple numerical examples and conclude the future research topics under balking situation.

• 품질경영학회지
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• 제40권4호
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• pp.441-452
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• 2012

Purpose: In this paper, we have considered a problem of newsvendor model in an environment of random yields in quality and customer balking behavior, in which only the mean and the variance of the demand are known. In practice, the distributional information of the demand is very limited and only the mean and variance are guessed by experience. In addition, due to the customers balking behavior occurring when the available inventory level decreases, the product's demand becomes a function of inventory level so that the classical newsvendor's optimal order quantity is no longer optimal. Methods: We have developed an optimal order quantity model that enables us to incorporate the random yield of a product and the customer balking information such as a threshold inventory level of balking and the corresponding probability of a sale during the balking. Results: We illustrated the concepts developed here through simple numerical examples and showed the robustness of our model in a various setting of parameters. Conclusion: This paper provides a useful analysis showing that our distribution-specific and distribution-free approach to the optimal order quantity in the newsboy model can act as an effective tools to match supply with demand for these product lines.

• Journal of applied mathematics & informatics
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• 제18권1_2호
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• pp.431-439
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• 2005

The aim of this paper is to derive the analytical solution of the queue: $M/E_{r}/1/k/N$ for machine interference system with balking and reneging considering the discipline FIFO. Some measures of effectiveness and some special cases are obtained.

• 대한수학회논문집
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• 제16권4호
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• pp.659-666
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• 2001

The aim of this paper is to derive the analytical so-lution of the queue: H$_{r}$/M/c/k/N for machine interference with balking and reneging, and FIFO (first in, first out) service disci-pline.e.

• Journal of the Korean Statistical Society
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• 제31권4호
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• pp.491-507
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• 2002

We analyze a single server bulk input queue with optional server vacations under a single vacation policy and balking phenomenon. The service times of the customers as well as the vacation times of the server have been assumed to be arbitrary (general). We further assume that not all arriving batches join the system during server's vacation periods. The supplementary variable technique is employed to obtain time-dependent probability generating functions of the queue size as well as the system size in terms of their Laplace transforms. For the steady state, we obtain probability generating functions of the queue size as well as the system size, the expected number of customers and the expected waiting time of the customers in the queue as well as the system, all in explicit and closed forms. Some special cases are discussed and some known results have been derived.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2004년도 춘계학술발표회
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• pp.43-48
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• 2004

교통체계의 발달은 지리공간 위에서 시간거리와 비용거리를 단축시켜 시공간과 비용공간의 상대적 수렴을 가져온다. 고속도로와 고속철 둥 사회간접자본시설은 지역발전에 절대적인 파급효과를 미친다. 목포는 서해안고속도로와 호남고속철도의 영향권 내 지역으로서, 여름휴가철(성수기) 외지의 관광객은 목포와 같은 항구도시를 찾지만, 연안여객선의 수용능력이 관광객(도착차량)의 수를 포용하지 못하므로 balking현상이 발생한다. 이 연구에서는 ARENA의 개념과 속성을 이해하고 목포항 연안여객선 운영현황 시뮬레이션을 통하여 balking의 진상을 면밀히 분석, 연안도로의 정체현상 해결을 위한 효율적인 여객선 운영방안을 모색하고자 한다. 이 논문은 고속도로와 고속철의 영향권 테에 있는 항구도시의 경제부흥에 일조 할 수 있다는 정성적 효과를 제시하는데 의의가 있다.

• 한국시뮬레이션학회논문지
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• 제13권1호
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• pp.41-50
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• 2004

The purpose of this paper is to analyse the manager's policy to maximize the profit in a multiple-server queueing facility with a limited queue capacity. We assume that the level of advertizing effects on the arrival rate of customers to the facility. The model without ‘word of mouth effect’ is assumed that the arrival rate is independent on the qualify of service level. We estimate the service quality by the balking rate of customers from system. We extend this to the model with ‘word of mouth effect’. To achieve the maximum profit, the most important factor is the considerably high utilization of facility for both models. Given service rate, we should maintain an effective arrival rate to some extent. To this end, among the available options, an increase of advertizing effort is more desirable than reducing the fee if the service value of customers remains unchanged. We also investigate whether the variability of service time has a significant impact on determining the optimal policy. The cost of service variability is not so expensive as that in a single server model due to the reduced variability of service times in a multiple-server model.

• 한국콘텐츠학회논문지
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• 제16권7호
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• pp.146-153
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• 2016

본 연구에서는 연속시간 M/M/1 대기행렬 시스템에서 고객들의 평형행동과 서버의 최적 가격책정 전략에 대해 다룬다. 본 연구에서는 두가지 유형의 가격지불 모형을 고려한다. 첫 번째로, 정액지불 모형은 고객의 시스템 내 체류시간에 관계없이 고정된 요금을 부과한다. 두 번째로, 정률지불 모형은 고객의 시스템 내 체류시간에 비례하여 요금을 부과한다. 각 지불 모형에서 시스템을 이탈하는 고객의 보상은 체류시간에 반비례한다. 본 연구는 각 가격지불 모형에서 단위시간당 서버의 기대수익을 최대화하기 위한 가격책정 전략과 그 전략에 따른 고객의 시스템 입장행동에 대해 분석한다. 마지막으로 수치예제를 통해 정액지불 모형과 정률지불 모형을 비교분석하고, 서버측면에서 어떤 가격지불 모형을 선택해야하는 지를 살펴본다.